Transverse pin tool holder



April 30, 1957 L. J. GORGOL ET AL TRANSVERSE PIN TOOL HOLDER Filed Dec.30, 1954 United States Patent TRANSVERSE PIN TOOL HOLDER Leonard J.Gorgol and Eugene M. Liberty, Indianapolis,

Ind., assignors to Western Electric (Ioinpany, Incorporated, New York,N. Y., a corporation of New York Application December 39, 1954, SerialNo. 478,598

Claims. (Cl. 27997) This invention relates to tool holders, and moreparticularly to devices for holding taps.

An object of this invention is to provide an improved device of simpleconstruction for holding a tap.

Another object of this invention is to provide a tap driver having areplaceable key for holding a tap for rotation into apertured Work to betapped.

One embodiment of the invention may include a slotted tap driver forholding and driving a tap having a square tang and a cylindrical shank,the shank being positioned and retained by friction in the slot in thetap driver with the square tang of the tap entering a notch in areplaceable rectangular key positioned in the slot of the tap driver tothus drive the tap by means of the replaceable key.

Other objects and advantages of the invention will become apparent byreference to the following detailed description and the accompanyingdrawings, illustrating a preferred embodiment, in which Fig. 1 is a sideelevation of the device with a tap held therein by a replaceable key;

Fig. 2 is a section taken along lines 2-2 of Fig. 1; and

Fig. 3 is a cross-section taken along line 33 of Fig. 1 and showing thekey and tap in working position.

Referring now in detail to the drawings there is shown a tap 11 having acylindrical shank 12 and a square tang 13 which the present invention isadapted to hold in a bifurcated tap holder or driver 15 to actuate it totap holes in an article. The tap driver or holder 15 has a slot 16dividing one end into two legs 18 and 19 which cooperate to hold byfriction the shank 12 of the tap. 11 in corresponding axial grooves 21and 22 on facing surfaces 23 and 24 of the legs 18 and 19.

Transverse grooves 26 and 27 of rectangular shape in the legs 18 and 19cooperate to hold a notched or U- shaped rectangular key 29 betweenthese legs on the end of the tap 11, a notch 30 in the key 29 beingpositioned to receive the tang 13 of the tap 11 to rotate it with thetap driver 15 to drive it into an aperture in a work piece.

In operating the device, the key 29 is placed in the transverserectangular grooves 26 and 27 with the downwardly facing notch 30 of thekey facing the corresponding axial grooves 21 and 22 in the legs 18 and19 and the shank 12 of the tap 11 is frictionally forced into the axialgrooves 21 and 22, the notch 39 in the key 29 receiving the square tang13 of the tap 11 to rotate the tap with the tap driver or holder 15. Theremovable key 29 may be quickly replaced with a similar key whendesired.

It is to be understood that the above-described arrangements are simplyillustrative of the application of the principles of this invention.Manifestly other arrangements may be readily devised by those skilled inthe art which will embody the principles of the invention and fallwithin the spirit and scope thereof.

What is claimed is:

l. A device for holding a tool comprising an elongated member having anaxial recess for receiving a tool shank and a transverse openingintersecting the axial recess, and a replaceable key inserted into thesaid transverse opening and having a recess for engaging a tool placedin the said axial recess of the elongated member.

2. A tool holder comprising an elongated member having a pair of axiallyextended legs having cooperating recesses for holding a tool shank, areplaceable key having a depending opening, said legs having cooperatingtransverse slots for receiving the key so that its depending openingengages a tool inserted into the elongated member to drive it.

3. A tool holder comprising an elongated body having a pair of axiallyextended cooperating legs for holding a tool shank, said legs having apair of juxtapositioned transverse grooves therein, and a notched keyadapted to fit into the pair of transverse grooves, the notch in the keyreceiving the end of the shank of the tool to rotate the tool with theelongated body.

4. A device for holding a tool comprising an elongated member having anaxial recess for receiving a tool shank, and a recessed key adapted tofit into the axial recess in the elongated member, the recess in the keyreceiving the end of the tool shank to rotate the tool with theelongated member.

5. A tool holder comprising a driver having a longitudinal slit forminga pair of resilient fingers for receiving and frictionally holding theshank of a tool, and a U- shaped key designed to extend transversely inthe slit for receiving between the legs of the key an end portion of theshank having interlocking faces thereon for locking the tool againstrotation in the driver.

References Cited in the file of this patent UNITED STATES PATENTS

